US9450474B2 - Active cooling of a motor - Google Patents

Active cooling of a motor Download PDF

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Publication number
US9450474B2
US9450474B2 US14/418,304 US201314418304A US9450474B2 US 9450474 B2 US9450474 B2 US 9450474B2 US 201314418304 A US201314418304 A US 201314418304A US 9450474 B2 US9450474 B2 US 9450474B2
Authority
US
United States
Prior art keywords
air guide
air
electronics housing
attachment wall
guide element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
US14/418,304
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English (en)
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US20150188392A1 (en
Inventor
Christian Haag
Sven Walter
Bjoern Sudler
Oliver Haaf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebm Papst Mulfingen GmbH and Co KG
Original Assignee
Ebm Papst Mulfingen GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ebm Papst Mulfingen GmbH and Co KG filed Critical Ebm Papst Mulfingen GmbH and Co KG
Assigned to EBM-PAPST MULFINGEN GMBH & CO . KG reassignment EBM-PAPST MULFINGEN GMBH & CO . KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUDLER, BJOERN, Walter, Sven, HAAF, OLIVER, HAAG, CHRISTIAN
Publication of US20150188392A1 publication Critical patent/US20150188392A1/en
Application granted granted Critical
Publication of US9450474B2 publication Critical patent/US9450474B2/en
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Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle

Definitions

  • the motor has an air guide element and an air-conveying element connected with the rotor in torque-proof manner, wherein the air guide element surrounds the stator bushing, and a flow space is formed between the air guide element and an outside circumference of the stator bushing, wherein the flow space is opened in the direction of the attachment wall, on the side of the electronics housing, by means of at least one flow gap, and the air-conveying element opens into a through-flow opening of the air guide element, with an intake opening through a sealing gap.
  • FIG. 1 a three-dimensional exploded drawing of a first embodiment of a motor according to the invention, with a support construction
  • FIG. 2 a side view of the first embodiment of a motor according to the invention, with a support construction, with a partial cross-section in the region of the air guide element and of the air guide channel,
  • the motor is particularly mounted on a supporting construction 10 or on an attachment wall 11 having an installation opening 30 , by means of the stator bushing 3 .
  • the attachment wall 11 can be part of a supporting construction 10 configured as a component of the motor, so that the supporting construction 10 forms the attachment wall 11 .
  • the attachment wall 11 can result from the installation situation, for example as a wall of an installation housing in which the motor is mounted.
  • the motor is mounted in the installation opening 30 in such a manner that the electronics housing 1 is situated on the one side of the attachment wall 11 , and the stator as well as the rotor 5 of the motor is situated on the other side of the attachment wall 11 .
  • the air guide element 22 a , 22 b surrounds the stator in the region of the stator bushing 3 , particularly in shell-like manner, and thereby a circumferential flow space 35 is formed between the air guide element 22 a , 22 b and an outside circumference of the stator bushing 3 .
  • the air guide element 22 a , 22 b and the air-conveying element 14 particularly consist of plastic.
  • the air-conveying element 14 is driven by way of the motor.
  • the air-conveying element 14 is particularly configured as a radial fan wheel and mounted on the stator so as to rotate, and connected with the rotor 5 in torque-proof manner.
  • a ring opening 17 of the air-conveying element 14 is covered by the rotor 5 , on the rotor side.
  • the air-conveying element 14 has a circumferential intake opening 16 that is open in the axial direction, which opening is connected, in terms of flow technology, in the interior of the air-conveying element 14 , with a circumferential blow-out opening 18 that is open in the radial direction.
  • the intake opening 16 of the air-conveying element 14 lies opposite to the through-flow opening 26 of the air guide element 22 a , 22 b , wherein the air-conveying element 14 opens into the axial through-flow opening 26 of the air guide element 22 a , 22 b with the axial intake opening 16 , by way of a sealing gap.
  • the air-conveying element 14 has a funnel-shaped ring collar 29 on the side of the air guide element 22 a , 22 b , at the edge of a circumferential wall of the intake opening 16 , and the air guide element 22 a has a circumferential ring groove 33 on the side of the air-conveying element 14 , at the edge of the through-flow opening 26 , wherein the ring collar 29 projects into the ring groove 33 , and ring collar 29 and ring groove 33 form the sealing gap.
  • the air-conveying element 14 is configured in such a manner that it generates a partial vacuum at its intake opening 16 during motor operation, and radially blows out an air volume stream at its blow-out opening 18 .
  • a circumferential flow gap 27 is formed between the air guide element 22 a , 22 b and the outside circumference edge of the stator bushing 3 , so that the flow space 35 is open in the direction of the attachment wall 11 on the side of the electronics housing 1 , wherein the flow gap 27 is axially covered, at least in part, in the installed state, by the attachment wall 11 .
  • the attachment wall 11 has at least one channel opening 28 , which runs axially.
  • At least one air guide channel 20 is disposed on the outside circumference of the electronics housing 1 on the side of the attachment wall 11 that lies opposite to the air guide element 22 a , 22 b , and runs from the channel opening 28 of the attachment wall 11 , in the direction of at least one region of the electronics housing 1 that is to be cooled, on the outside circumference of the electronics housing 1 .
  • the air guide channel 20 can particularly be attached to the attachment wall 11 and is particularly made of plastic.
  • the air guide channel 20 has a ring-shaped circumferential projection 21 on its end that lies against the outside circumference of the electronics housing 1 , which projection is particularly adapted, in terms of shape, to the outside circumference progression of the electronics housing 1 , particularly of the housing cooling ribs 7 .
  • the projection 21 together with the end of the air guide channel 20 , covers a region of the housing cooling ribs 7 , in terms of circumference, and forms multiple cooling channels that run between the housing cooling ribs 7 .
  • a selected region of the electronics housing 1 is cooled in targeted manner. This is particularly the region in which the electronic components that must particularly be cooled are disposed in the interior of the electronics housing 1 . It is also conceivable, however, to dispose multiple channel openings 28 in the attachment wall 11 , in the region of the flow gap 27 , distributed over the circumference of the motor, so that multiple air guide channels 20 cool multiple regions of the electronics housing 1 .
  • the air guide element 22 a can be attached to the attachment wall 11 and is disposed between the attachment wall 11 and the air-conveying element 14 , wherein the intake opening 16 of the air-conveying element 14 is oriented in the direction of the attachment wall 11 .
  • the air-conveying element 14 generates a partial vacuum in the region of its intake opening 16 and of the opposite through-flow opening 26 of the air guide element 22 a .
  • An air volume stream is drawn in by way of the flow space 35 and the air guide channel 20 .
  • the electronics housing 1 is cooled, thereby cooling specific electronic components to be cooled, which are disposed in the electronics housing 1 .
  • the projection 21 of the air guide channel 20 additionally increases the size of the intake path through the housing cooling ribs 7 , and thereby reinforces the cooling effect.
  • the air volume stream is distributed at the circumference of the stator bushing 3 , by means of the circumferential flow space 35 and the circumferential intake opening 16 of the air-conveying element 14 , and is particularly passed along the stator cooling ribs 8 of the stator bushing 3 , where it absorbs heat from the stator and from the surface of the stator cooling ribs 8 , respectively.
  • the air volume stream to be cooled is at first drawn in the region of the electronics housing 1 or through the air guide channel 20 on the outside circumference of the electronics housing 1 .
  • the air volume stream comes into contact with the electronics housing 1 , at first, so that the electronics housing 1 is particularly strongly cooled. This is particularly advantageous if the ambient air has a lower temperature on the side of the electronics housing 1 than in the region of the rotor 5 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)
US14/418,304 2012-08-02 2013-07-17 Active cooling of a motor Active US9450474B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102012107107.1 2012-08-02
DE102012107107.1A DE102012107107B4 (de) 2012-08-02 2012-08-02 Aktive Kühlung eines Motors
DE102012107107 2012-08-02
PCT/EP2013/065098 WO2014019854A2 (de) 2012-08-02 2013-07-17 Aktive kühlung eines motors

Publications (2)

Publication Number Publication Date
US20150188392A1 US20150188392A1 (en) 2015-07-02
US9450474B2 true US9450474B2 (en) 2016-09-20

Family

ID=48856600

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/418,304 Active US9450474B2 (en) 2012-08-02 2013-07-17 Active cooling of a motor

Country Status (9)

Country Link
US (1) US9450474B2 (de)
EP (1) EP2880746B1 (de)
CN (1) CN104521117B (de)
DE (1) DE102012107107B4 (de)
DK (1) DK2880746T3 (de)
ES (1) ES2768243T3 (de)
PL (1) PL2880746T3 (de)
PT (1) PT2880746T (de)
WO (1) WO2014019854A2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD775721S1 (en) * 2015-09-11 2017-01-03 Ebm-Papst Mulfingen Gmbh & Co. Kg Flow grid
USD776250S1 (en) * 2015-09-11 2017-01-10 Ebm-Papst Mulfingen Gmbh & Co. Kg Flow grid
USD782645S1 (en) * 2015-05-26 2017-03-28 Ebm-Papst Mulfingen Gmbh & Co. Kg Fan flow grid
US20180123428A1 (en) * 2015-11-02 2018-05-03 Ebm-Papst Mulfingen Gmbh & Co. Kg Electric motor with improved cooling
EP4362288A1 (de) * 2022-10-28 2024-05-01 BRP-Rotax GmbH & Co. KG Kühlsystem für antriebseinheit eines elektrofahrzeugs

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015105188A1 (de) * 2015-04-02 2016-10-06 Ebm-Papst Mulfingen Gmbh & Co. Kg Elektromotor mit drückender Kühlluftförderung sowie Verfahren zum Kühlen von Bauteilen des Elektromotors
TWI694662B (zh) * 2018-07-23 2020-05-21 大陸商昆山廣興電子有限公司 馬達及其轉子
FR3086125B1 (fr) * 2018-09-14 2020-10-02 Valeo Equip Electr Moteur Machine electrique tournante munie d'un palier realise a partir de deux parties surmoulees
DE102018218988A1 (de) * 2018-11-07 2020-05-07 Hanon Systems Efp Deutschland Gmbh Luftkühlung der Elektronik eines BLDC-Motors
CN109831053B (zh) * 2019-03-29 2025-02-21 浙江铭振电子股份有限公司 外转子电机驱动器的散热结构、电机和离心风机
CN112117855B (zh) * 2019-06-19 2023-07-11 台达电子工业股份有限公司 马达
DE102021120673A1 (de) * 2021-08-09 2023-02-09 Ebm-Papst Mulfingen Gmbh & Co. Kg Außenläufermotor mit einem Kühlrad zur Kühlung des Stators
DE102021120672A1 (de) 2021-08-09 2023-02-09 Ebm-Papst Mulfingen Gmbh & Co. Kg Elektromotor mit verbesserter Kühlung
CN115704392A (zh) * 2021-08-16 2023-02-17 艾默生环境优化技术(苏州)有限公司 进气分配装置及包括该进气分配装置的压缩机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778958A (en) 1954-10-28 1957-01-22 Gen Electric Dynamoelectric machine
US4908538A (en) * 1989-02-28 1990-03-13 Geberth John Daniel Jun Totally enclosed electric motor
DE10313273A1 (de) 2003-03-24 2004-10-07 Ebm-Papst Mulfingen Gmbh & Co. Kg Elektromotor mit hoher IP-Schutzart
US20050116554A1 (en) * 2001-12-14 2005-06-02 Viktor Dano Electric drive unit
US20090028730A1 (en) * 2005-06-06 2009-01-29 Bernhard Radermacher Radial fan
US20110074235A1 (en) * 2009-09-29 2011-03-31 Ngan Fai Leung Air cooled electric motor
US20110148230A1 (en) * 2009-12-18 2011-06-23 Ziehl-Abegg Ag Electric Motor, Especially External Rotor Motor
US20120001505A1 (en) 2010-07-05 2012-01-05 Hanning Elektro-Werke Gmbh & Co. Kg Electric machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5574321A (en) * 1994-05-04 1996-11-12 Emerson Electric Co. Integral refrigerator motor fan blades
DE20211857U1 (de) 2002-08-01 2003-12-11 Ebm Werke Gmbh & Co. Kg Lüfteranordnung zur Kühlung von Kraftfahrzeug-Motoren
DE102004004227A1 (de) * 2004-01-28 2005-08-18 Ebm-Papst Mulfingen Gmbh & Co. Kg Kollektorloser Gleichstrommotor
ATE467940T1 (de) * 2007-09-26 2010-05-15 Ebm Papst Mulfingen Gmbh & Co Elektromotor
JP5312614B2 (ja) 2010-01-29 2013-10-09 三菱電機株式会社 インバータ一体型駆動モジュール

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778958A (en) 1954-10-28 1957-01-22 Gen Electric Dynamoelectric machine
US4908538A (en) * 1989-02-28 1990-03-13 Geberth John Daniel Jun Totally enclosed electric motor
US20050116554A1 (en) * 2001-12-14 2005-06-02 Viktor Dano Electric drive unit
DE10313273A1 (de) 2003-03-24 2004-10-07 Ebm-Papst Mulfingen Gmbh & Co. Kg Elektromotor mit hoher IP-Schutzart
US20090028730A1 (en) * 2005-06-06 2009-01-29 Bernhard Radermacher Radial fan
US20110074235A1 (en) * 2009-09-29 2011-03-31 Ngan Fai Leung Air cooled electric motor
US20110148230A1 (en) * 2009-12-18 2011-06-23 Ziehl-Abegg Ag Electric Motor, Especially External Rotor Motor
US20120001505A1 (en) 2010-07-05 2012-01-05 Hanning Elektro-Werke Gmbh & Co. Kg Electric machine
EP2405561A2 (de) 2010-07-05 2012-01-11 Hanning Elektro-Werke GmbH & Co. KG Elektrische Maschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
International Search Report of PCT/EP2013/065098, mailed Jun. 25, 2014.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD782645S1 (en) * 2015-05-26 2017-03-28 Ebm-Papst Mulfingen Gmbh & Co. Kg Fan flow grid
USD775721S1 (en) * 2015-09-11 2017-01-03 Ebm-Papst Mulfingen Gmbh & Co. Kg Flow grid
USD776250S1 (en) * 2015-09-11 2017-01-10 Ebm-Papst Mulfingen Gmbh & Co. Kg Flow grid
US20180123428A1 (en) * 2015-11-02 2018-05-03 Ebm-Papst Mulfingen Gmbh & Co. Kg Electric motor with improved cooling
US10784747B2 (en) * 2015-11-02 2020-09-22 Ebm-Papst Mulfingen Gmbh & Co. Kg Electric motor with improved cooling having v-shaped fins on a rotor facing radially extending fins on a stator
EP4362288A1 (de) * 2022-10-28 2024-05-01 BRP-Rotax GmbH & Co. KG Kühlsystem für antriebseinheit eines elektrofahrzeugs

Also Published As

Publication number Publication date
PL2880746T3 (pl) 2020-07-27
WO2014019854A3 (de) 2014-08-14
DE102012107107B4 (de) 2021-11-11
US20150188392A1 (en) 2015-07-02
DK2880746T3 (da) 2020-01-27
WO2014019854A2 (de) 2014-02-06
EP2880746B1 (de) 2019-11-27
ES2768243T3 (es) 2020-06-22
EP2880746A2 (de) 2015-06-10
WO2014019854A4 (de) 2014-10-09
CN104521117B (zh) 2018-01-09
CN104521117A (zh) 2015-04-15
PT2880746T (pt) 2020-02-04
DE102012107107A1 (de) 2014-02-06

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